Doesn't this ignore the reality that a service with many of subscribers puts dramatically more strain on marketplace systems than a service with only a few subs

Doesn't this ignore the reality that a service with many of subscribers puts dramatically more strain on marketplace systems than a service with only a few subscribers? For example, a smalltime dev isn't going to see hardly any refunds, but a dev on the scale of Epic Games is going to be seeing something on the order of tens or hundreds per minute. Should that not be accounted for? That said, this could be accomplished with tiered fixed fees. An indie dev would probably land in a low rung where costs are tiny, where a triple-A game studio would get charged substantially more.